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Thread: R75/5 High Beam Indicator Stuck On

  1. #1
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    R75/5 High Beam Indicator Stuck On

    Hey all,

    So I've been having an issue for a while now, but it is starting to get to me.

    Anytime I turn my ignition key/switch to the right, my high beam indicator illuminates and stays on. If I turn the key to the right (parking lamp) I only see the indicator lamp turn on when I "flash" my high beams.

    Any idea what might be causing it? Could this be a ground issue on the ignition key switch board? Has anyone had a similar problem before?



    Thanks so much,

    Jonathan

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    Registered User lmo1131's Avatar
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    Anytime I turn my ignition key/switch to the right, my high beam indicator illuminates and stays on. If I turn the key to the right (parking lamp) I only see the indicator lamp turn on when I "flash" my high beams.

    clarify please
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

  3. #3
    Registered User lmo1131's Avatar
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    This might help

    R75/5 (with fuses)



    EDIT - replaced downloaded wiring diagram image with linked version.
    Last edited by lmo1131; 05-19-2013 at 05:01 PM.
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

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    Quote Originally Posted by lmo1131 View Post
    clarify please
    Sorry Was late when I posted that. Sleep deprivation got the best of me! Hah.

    When I turn my key/ignition switch to the right to turn my headlamp on, the high beam indicator stays on no matter if high or low beams are activated on the handlebar control. Though when I move the key/ignition to the left (parking light position) the high beam indicator only turns on when I flash the high beam indicator with the handlebar controls.

    If the headlamp is off and the key is in the normal up/down position the high beam indicator is not active.

    Basically it looks like the high beam indicator had a problem when the key ignition switch is in the headlamp "on" position. I've looked at the electrical schematic but not so sure I totally know how to diagnose the
    problem.

  5. #5
    Registered User lmo1131's Avatar
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    When I turn my key/ignition switch to the right to turn my headlamp on, the high beam indicator stays on no matter if high or low beams are activated on the handlebar control.

    when I move the key/ignition to the left (parking light position) the high beam indicator only turns on when I flash the high beam indicator with the handlebar controls.
    The first thing you're going to need to get into the headlight nacelle and verify the wires are connected to the correct terminals.
    I'd look at the headlight bulb connector first and make sure it's properly connected (the Hi-beam indicator (ref. "g") is fed by the white wire coming from the headlight connector (it's position might be switched))

    Not as easy to follow in black & white, but more information is contained on this version (terminal numbers/letters)
    You can use "control" and "+" (at the same time) to enlarge this image "control" and " - " to reduce it.


    Wiring diagram

    1. Turn signal switch
    2. Head light

    a. Turn signal flasher
    b. Head light high beam
    c. Head light low beam
    d. Parking light
    e. Cable connector
    f. Ignition and light switch
    g. High beam indicator light (blue)
    h. Instrument illumination
    j. Oil pressure indicator light (orange)
    k. Neutral indicator light (green)
    l. Battery charging indicator light (red)
    3. Dimmer switch
    4. Turn signal, front, right
    5. Hand brake stop light switch
    6. Turn signal, front, left
    7. Ground connection on frame for ignition coils
    8. Relay for repeat start prevention
    9. Horn
    10. Contact breaker
    11. Ignition coils
    12. Condenser
    13. Neutral indicator light switch
    14. Oil pressure indicator light switch
    15. Foot brake stop light switch
    16. Diode plate
    17. Spark plugs with caps
    18. Three-phase alternator
    19. Plug connection in wiring harness
    20. Turn signal, rear, right
    21. Tail light

    j. Rear light and license plate illumination
    k. Stop light
    22. Turn signal, rear left
    23. Voltage regulator
    24. Battery
    25. Ground connection on transmission cover
    26. Starter motor


    Wiring color coding

    BL = blue
    BR = brown
    GE = amber
    GR = grey
    GN = green
    RT = red
    SW = black
    WS = white
    Attached Images Attached Images
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

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    Quote Originally Posted by lmo1131 View Post
    The first thing you're going to need to get into the headlight nacelle and verify the wires are connected to the correct terminals.
    I'd look at the headlight bulb connector first and make sure it's properly connected (the Hi-beam indicator (ref. "g") is fed by the white wire coming from the headlight connector (it's position might be switched))

    Not as easy to follow in black & white, but more information is contained on this version (terminal numbers/letters)
    You can use "control" and "+" (at the same time) to enlarge this image "control" and " - " to reduce it.


    Wiring diagram

    1. Turn signal switch
    2. Head light

    a. Turn signal flasher
    b. Head light high beam
    c. Head light low beam
    d. Parking light
    e. Cable connector
    f. Ignition and light switch
    g. High beam indicator light (blue)
    h. Instrument illumination
    j. Oil pressure indicator light (orange)
    k. Neutral indicator light (green)
    l. Battery charging indicator light (red)
    3. Dimmer switch
    4. Turn signal, front, right
    5. Hand brake stop light switch
    6. Turn signal, front, left
    7. Ground connection on frame for ignition coils
    8. Relay for repeat start prevention
    9. Horn
    10. Contact breaker
    11. Ignition coils
    12. Condenser
    13. Neutral indicator light switch
    14. Oil pressure indicator light switch
    15. Foot brake stop light switch
    16. Diode plate
    17. Spark plugs with caps
    18. Three-phase alternator
    19. Plug connection in wiring harness
    20. Turn signal, rear, right
    21. Tail light

    j. Rear light and license plate illumination
    k. Stop light
    22. Turn signal, rear left
    23. Voltage regulator
    24. Battery
    25. Ground connection on transmission cover
    26. Starter motor


    Wiring color coding

    BL = blue
    BR = brown
    GE = amber
    GR = grey
    GN = green
    RT = red
    SW = black
    WS = white

    Great, Thanks for this info Lew. Will check tonight and report what I find.

  7. #7
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    Got it! All fixed now!


    Turns out the headlamp beam was connected into one of the serial illumination lamps instead. So we had two issues. The high beam bulb was inserted into one of the white illumination lamps, and the instrument cluster bulb was connected into the wire/holder for the high beam bulb AND plugged into the wrong headlamp connector (hella connector). Go figure!



    I did notice though that now when switching the high beam flasher with the left handlebar control it does cause the instrument lamp cluster to flicker for a split second. Not sure if this is normal or not but Im planning on disassembling the handlebar controls soon anyway to just clean them up, etc.



    Thanks again, lew!

  8. #8
    Registered User lmo1131's Avatar
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    Cool!!!

    Glad that worked out.
    "It is what you discover, after you know it all, that counts." _ John Wooden

    Lew Morris
    1973 R75/5 - original owner

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